Precache tracking database

chrome/browser/precache/most_visited_urls_provider.cc

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/precache/most_visited_urls_provider.h"
+
+#include <list>
+
+#include "base/bind.h"
+#include "chrome/browser/history/history_types.h"
+#include "chrome/browser/history/top_sites.h"
+#include "url/gurl.h"
+
+using history::MostVisitedURLList;
+
+namespace {
+
+void OnMostVisitedURLsReceived(
+    precache::URLListProvider::GetURLsCallback callback,
+    const MostVisitedURLList& most_visited_urls) {
+  std::list<GURL> urls;
+  for (MostVisitedURLList::const_iterator it = most_visited_urls.begin();
+       it != most_visited_urls.end(); ++it) {
+    urls.push_back(it->url);
+  }
+  callback.Run(urls);
+}
+
+}  // namespace
+
+namespace precache {
+
+MostVisitedURLsProvider::MostVisitedURLsProvider(history::TopSites* top_sites)
+    : top_sites_(top_sites) {}
+
+MostVisitedURLsProvider::~MostVisitedURLsProvider() {}
+
+void MostVisitedURLsProvider::GetURLs(const GetURLsCallback& callback) {
+  top_sites_->GetMostVisitedURLs(
+      base::Bind(&OnMostVisitedURLsReceived, callback));
+}
+
+}  // namespace precache